Armature and magnet adjusting device for relays or other electric instruments.



No. 675,675. Patente d 1m 4, 1901. u. s. noazns.

ARNATURE AND MAGNET ADJUSTING DEVICE FOR RELAYS OR OTHER ELECTRICINSTRUMENTS.

I (Application filed In. 5, 1901.)

(No Nodal.)

I ww

3513' GM? 1mm Lwwfp/f "UNI-TED S'rAT-Es "PATENT OFFICE.

ULYSSES e; aoenas, on NEW YORK, N. Y.

'ARMATURE AND MAGNET ADJUSTING DEVICE FOR RELAYS OR OTHER ELECTRICINSTRUMENTS.

SPECIFICATION forming part of Letters Patent No. 675,675, dated June 4;,1901.

Application filed March 5, 1901'.

To all whom/ it may concern:

Be it known that I', ULYssEs G. ROGERS, a citizen of the United StatesofAm'erica, and a resident of New York city, county and State of NewYork, have invented certain new and useful Improvements in Armature andMag net Adjusting Devicesfor Relays or other Electric Instruments,0fwhich the following is a specification. I

My invention consists of improvements in l the constructions ofarmature,and magnet adjusting devices whereby it is designed to simplify the sameand cheapen the cost and also to provide better and more reliableinstruments, as hereinafter described, reference being unade to theaccompanying drawings, in which-- Figure 1 is a plan View of a relayinstrument provided with my improved adjusting devices, with a part insection. Fig. 2 is a rear elevation of the magnet-adjusting devices.Fig. 3 is a side elevation of the armature-adj usting devices. Fig. A:is a side elevation of the relay instrument. Fig. 5 is a detail on anenlarged scale;

A represents the base of the instrument; b, the magnet-spools; c, theiron bar connecting the cores of the magnets; d, the post, and e thestud attached to the iron bar and fixed in the head f of the post forsupporting and adjusting the iron bar and the magnet-cores attached tosaid bar. This stud e, which projects backward horizontally from thecenter. of the iron bar through a hole in the head f and isscrew-threaded in the part extending through saidhole, is in the commonconstruction provided with an adjusting-nut each side of the head forbeing adjusted by slackening the nuts and setting the stud along one wayor the other and then tightening up the nuts to hold it in the fixedposition, or in some cases a nut is usedonrone side of the post and aspring on the other side.

According to my improvement the head f of the post is slotted from thetop downward centrally and transversely of the hole, and a disk-nut gfor the stud e is fitted snugly therein, and the stud e is slotted fromthe end along the screw-threaded part, as shown at h, whereby thenatural tendency of the parts of a dense rolled or drawn rod thusslotted to spring apart is made available for fiaerial No. 49,9l1. (Nomodel.)

J :produ'cingfriction in the nut to hold the nut in any position inwhich it may be set, so

that the nut has only to be turned for adjusta spring, and two nuts havefirst to be unscrewejd'inthe one case, then adjusted, and

then'tightened up; but while in the other caseonly one nut hasto beadjusted the spring isnot desirablefor various reasons. Moreover, whenthe two nuts are slack the stud e is slack in the post, while in myconstruction the stud is as firmly held while being adjusted as whenfixed in its position.

The armature is represented at t' and is pivoted atj, as usual.

It represents the tension-spring; Z, the cord connecting the spring tothe adjusting-pin m; n, the reach-rod supporting the adjusting-pin 0,the post supporting the reach-rod,

and p the binding-screw for the reach-rod, said screw being set in thetop of the post 0.

In the common construction of these instruments the reach-rod is made inangular 1 cross-section in the part sliding in the post 0, and the holeis of corresponding shape to prevent the rod from turning by the weightof the milled head q when the set-screw p is slackened for ad justingthe rod. Such form of hole and also the angular form of the rod are moreexpensive to make than round forms, and I have contrived to make use ofround forms instead by providing a groove t in the upper side of theround reach-rod for recep tion of the point of the set-screw 10 in suchmanner that while sufficiently slack to permit the reach-rod to beshifted for adjustthe tension-spring 70 I saw a radial slit 0 in i thehead, cutting through to the bore, and fit I the part of the pin bearingtherein slightly larger than the hole, so as to expand the 'headslightly when forced in, and provide a retaining-pin w, screwing intothe head it and at its inner end entering a groove 00, formed in thepin, so as to prevent the pin from working out,

but not obstructing the turning of the pin.

Thus the pin m is always free to be turned by its head q without havingto manipulate a setscrew', as is the case with all such adjusting-v pinsas commonlyarranged. The head umay be of ample size to afford lastingstrength of grip by contraction on the pin. The adjusting-pin m and itshead are also constructed in one piece, so that with head 11 bored forthe adjusting-pin and split for producing the frictionby contraction andthe adjusting pin being'secured by a retaining-pin w and the groove 00thisadjusting device is provided "in simpler construction and fewerparts besides being simpler to manipulate. It will be seen that with theexception of the supporting-post, 0 only three pieces are used.

I am aware that a reach-rod having an attached tube formedwith a tapersplit end in the form of a chuck having a series of springjaws has beenused forholding the'adj ustingpin; butsuch'construction is manifestlymore i expensive and the grip less durable.

What I claim as my invention is- 1. The combination in amagnet-adjusting device, of the split expansive screw-threaded stud ofthe core=connecting iron bar, the supporting-post having the hole forreception of the stud and the slot for the adj isting-nut traversingsaid hole, and the nut for the stud fitting the slot and constrictingthe expanding members of the stud.

2. The reach rod and its adj usting in+ holding head,form'ed in integralconstruction and bored for reception of an adjusting-pin slightlysmaller than said pin, and radially split for expanding to receive thepinandto v grip and hold said pin by the natural contracting effect ofthe expansion produced'by the pin.

Signed at New York city this 26th day of February, 1901. I

I ULYSS'ES G. ROGERSl Witnesses:

A. PVTHAYER, C.- SEDGWICK.

